CN103267977B - Underground engineering wall rock disaster whole time interval induced polarization monitoring method - Google Patents
Underground engineering wall rock disaster whole time interval induced polarization monitoring method Download PDFInfo
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Abstract
Underground engineering wall rock disaster whole time interval induced polarization monitoring method, belongs to mining industry and geotechnical engineering safety detecting & monitoring technical field.By transmitting electrode (1), potential electrode (2), digital DC induced polarization instrument (3), main control computer (4), acoustic-optic alarm (5) forms jointly, transmitting electrode (1) and potential electrode (2) connect by being connected wire with digital DC induced polarization instrument (3) respectively, digital DC induced polarization instrument (3) intercoms mutually with main control computer (4), main control computer (4) communicates with acoustic-optic alarm (5), transmitting electrode (1) and potential electrode (2) are arranged in underground works tunnel or tunnel surrounding monitored area, the polarizability of the underground works tunnel that digital DC induced polarization instrument (3) and main control computer (4) monitor interval period or tunnel surrounding carries out real time record and analysis.There is the advantages such as monitoring range is large, security is high, not damaged, Monitoring Data are real-time reliably, grading forewarning system.
Description
Technical field
Underground engineering wall rock disaster whole time interval induced polarization monitoring method, belongs to mining industry and geotechnical engineering safety detecting & monitoring technical field.
Background technology
There is the danger such as wall caving, pucking, roof collapse, rock burst dynamic disaster, gushing water in underground engineering wall rock, it constitutes direct threat to staff and equipment.Single with regard to mine down-hole, only from the beginning of 2012 by by the end of September, 2012, roof fall accident just there occurs 11, and dead 44 people, country rock safety problem is urgently to be resolved hurrily.
Ensure that safety must carry out advance preventing and early warning for the problems referred to above, need to carry out monitoring to state of surrounding rock.Mainly contain surrouding rock deformation monitoring about wall rock's level at present and (surface displacement monitoring can be subdivided into, roof delamination and loose range monitoring), excavation support load monitoring, the stress monitoring of roadway surrounding rock and for the instrument and equipment of the real-time dynamic monitoring of above monitoring exploitation than if any top board dynamic monitoring system, top board on-line monitoring system etc., simple surrounding rock displacement monitoring, poppet pressure monitoring and stress monitoring are difficult to the situation of change and the damage development situation that really reflect country rock inside, therefore monitoring and early warning effect undesirable, for the acoustic emission monitor(ing) of country rock, it installs relative very complicated of observation process and costly, also higher to the requirement of whole installation quality, the post analysis of Monitoring Data is complicated and inconvenient, actual effect is unsatisfactory, be necessary to seek new effective monitoring index system technology.
Under artificial current field primary field or exciting field effect, there is rock or the ore of different electrochemical properties, because electrochemical action will produce time dependent secondary electrical field (induced polarization field), this physics chemical action is called effect of induced polarization.The ratio of voltage of secondary field and potential difference of primary field is called polarizability.Induced polarization method solves the electrical prospecting method of geological problem, up to now, the method is all mainly conceived to look for the application of ore deposit, the hydrology, engineering and other geology aspect, and is used for have not been reported of country rock disaster monitoring for by induced polarization method.It is polarizability that application instrument of induced polarization method directly measures the important parameter obtained, and country rock break last as have kick, fluctuation, acceleration decline or the sharply polarizability premonitory phenomenon such as risings, induced polarization method is used for country rock disaster monitoring can realize underground engineering wall rock monitoring on a large scale and simple to operate, security is high, automaticity is high, not damaged, Monitoring Data in real time, reliably, the advantage such as applied range, grading forewarning system.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, provide that a kind of monitoring range is large, easy and simple to handle, security is high, automaticity is high, not damaged, Monitoring Data in real time, underground engineering wall rock disaster whole time interval induced polarization monitoring method reliably.
The technical solution adopted for the present invention to solve the technical problems is: this underground engineering wall rock disaster whole time interval induced polarization monitoring method, it is characterized in that: by transmitting electrode, potential electrode, digital DC induced polarization instrument, main control computer, acoustic-optic alarm forms underground engineering wall rock disaster induced polarization real-time monitoring device jointly, transmitting electrode and potential electrode connect by being connected wire with digital DC induced polarization instrument respectively, digital DC induced polarization instrument intercoms mutually with main control computer, main control computer communicates with acoustic-optic alarm, transmitting electrode and potential electrode are arranged in underground works tunnel or tunnel surrounding monitored area, the polarizability of the underground works tunnel that digital DC induced polarization instrument and main control computer monitor interval period or tunnel surrounding carries out real time record and analysis,
Monitoring step is as follows:
Step 3001: in underground works tunnel or tunnel surrounding monitoring section, arranges A, B two transmitting electrodes at a certain distance, arranges M, N two potential electrode between A, B two transmitting electrodes at a certain distance;
Step 3002: A, B two transmitting electrodes and M, N two potential electrode are connected by being connected wire with digital DC induced polarization instrument respectively;
Step 3003: digital DC induced polarization instrument is connected with acoustic-optic alarm with main control computer, digital DC induced polarization instrument intercoms mutually with main control computer, and main control computer communicates with acoustic-optic alarm;
Step 3004: opening device implements monitoring, the polarizability of the underground works tunnel that digital DC induced polarization instrument and main control computer monitor interval period or tunnel surrounding carries out real time record and analysis;
Step 3005: main control computer and digital DC induced polarization instrument are by the real-time analysis to the country rock polarizability monitored, obtain the country rock polarizability of different interval period in monitoring range and Changing Pattern thereof and feature, judge whether the variation tendency of interval period country rock polarizability, rule and feature meet the Precursory monitoring of setting, if the Precursory monitoring meeting setting enters step 3006; If do not meet the Precursory monitoring of setting, return main control computer and continue monitoring and analyze;
Step 3006: the Precursory monitoring meeting setting, main control computer startup acoustic-optic alarm sends early warning and returns main control computer continuation analysis simultaneously.
Described step 3006 meets the Precursory monitoring of setting, and the step returning main control computer continuation analysis is as follows:
Step 4001: if meet the Precursory monitoring situation of setting, judges surrounding rock failure or unstability type and potential danger;
Step 4002: according to surrounding rock failure or unstability type and potential danger, judge whether it country rock disaster occurs further, if there is disaster, enters step 4003;
Step 4003: if there is country rock disaster, the determined monitoring range of deployment scenarios according to transmitting electrode and potential electrode determines hazard scope;
Step 4004: the hazard scope determined according to step 4003, main control computer starts acoustic-optic alarm;
Step 4005: main control computer issues early warning and rank simultaneously.
The Precursory monitoring that described step 3005 sets is kick, fluctuation, the acceleration decline of polarizability or sharply rises.
The arrangement pitch of described step 3001 transmitting electrode is 10m-100m.
The spacing being arranged in M, N two potential electrode in the middle part of A, B two transmitting electrodes in described step 3001 is less than or equal to 2/3 of A, B two transmitting electrode spacing, and MN >=AB/50.
The switch that setting is connected with underground engineering wall rock disaster induced polarization real-time monitoring device, router, mobile base station equipment realize monitoring in ground remote monitoring.
Compared with prior art, the beneficial effect that underground engineering wall rock disaster whole time interval induced polarization monitoring method of the present invention has is:
1, high, the not damaged of automaticity: monitored by induced polarization, achieve the non-destructive monitoring to country rock, by digital DC induced polarization instrument and main control computer program Real-time Collection and display Monitoring Data and graphing and analysis, automaticity strengthens further, saves human and material resources;
2, Monitoring Data in real time, reliable, applied range: the monitoring accuracy of induced polarization monitoring method to polarizability is high, little by extraneous disturbing effect, makes the data that monitor more true and reliable; Digital DC induced polarization instrument and main control computer program Real-time Collection and display Monitoring Data graphing and analysis, achieve the omnidistance Real-Time Monitoring to country rock; Can be applicable on the prediction such as large deformation, wall caving, pucking, roof collapse, rock burst dynamic disaster, gushing water of country rock to the induced polarization monitoring of country rock;
3, on a large scale monitor, grading forewarning system: achieve the large-scale whole time interval Real-Time Monitoring of country rock, by the real-time analysis to the country rock polarizability monitored, obtain the variation tendency of interval period country rock polarizability, rule and feature, the situation of the Precursory monitoring of setting is met according to it, judge whether it disaster occurs and determines hazard scope, send early warning and issue warning level according to hazard scope;
4, operation is simple with post analysis: adopt induced polarization to monitor to have simply, be easy to the feature that operates, whole observation process does not affect normally carrying out of engineering.The post analysis of induced polarization monitoring comprises resistivity, polarizability and half decay time etc., and for country rock disaster Main Analysis polarizability, post analysis is simple, if namely the Precursory monitoring meeting setting sends early warning, guarantees the safety of staff and equipment further.
Accompanying drawing explanation
Fig. 1 is embodiment 1 underground engineering wall rock disaster whole time interval induced polarization monitoring device structural representation.
Fig. 2 is that A, B two transmitting electrodes and M, N two potential electrode arrange schematic diagram.
Fig. 3 is underground engineering wall rock disaster whole time interval induced polarization monitoring process flow diagram.
Fig. 4 is the Precursory monitoring that step 3006 meets setting, and main control computer continues analysis process figure.
In Fig. 1: 1, transmitting electrode 2, potential electrode 3, digital DC induced polarization instrument 4, main control computer 5, acoustic-optic alarm.
In Fig. 2: A, B are transmitting electrode; M, N are potential electrode.
Embodiment
Below in conjunction with accompanying drawing 1-4, underground engineering wall rock disaster whole time interval induced polarization monitoring method of the present invention is described further.
Embodiment
Embodiment 1
With reference to accompanying drawing 1-Fig. 4: underground engineering wall rock disaster whole time interval induced polarization monitoring device of the present invention, is made up of jointly transmitting electrode 1, potential electrode 2, digital DC induced polarization instrument 3, main control computer 4, acoustic-optic alarm 5.
Transmitting electrode 1 and potential electrode 2 connect by being connected wire with digital DC induced polarization instrument 3 respectively, digital DC induced polarization instrument 3 intercoms with main control computer 4 phase, main control computer 4 communicates with acoustic-optic alarm 5, transmitting electrode 1 and potential electrode 2 are arranged in underground works tunnel or tunnel surrounding monitored area, and the polarizability of the underground works tunnel that digital DC induced polarization instrument 3 and main control computer 4 pairs of interval period monitor or tunnel surrounding carries out real time record and analysis;
This device directly uses in underground, and concrete monitoring step is as follows:
Step 3001: determine required monitoring section in underground works tunnel or tunneling region or arrange monitoring section with the advance of the face, after determining underground engineering wall rock monitoring section, arrange A at a certain distance, B two transmitting electrodes 1, A, B two transmitting electrode 1 spacing are determined according to required monitoring range and instrument condition, as 10m, 20m, 30m, 40m, 50m ... 100m etc., even farther, and make transmitting electrode 1 and potential electrode 2 reliable contacts country rock, for to country rock transmitter current, to set up artificial electric field, at A, M is arranged at a certain distance in B two transmitting electrode 1 spacing, N two potential electrode 2, M, N two potential electrode 2 spacing ranges are limited to A, B two transmitting electrode 1 middle parts, and M, the scope of N two potential electrode 2 should not be greater than A, 2/3 of B two transmitting electrode 1 spacing, i.e. MN >=1/50 ~ 1/30AB, concrete spacing is determined according to monitoring range and corresponding requirements,
Step 3002: A, B two transmitting electrodes 1 and M, N two potential electrode 2 are connected by being connected wire with digital DC induced polarization instrument 3 respectively;
Step 3003: digital DC induced polarization instrument 3 is connected with acoustic-optic alarm 5 with main control computer 4, digital DC induced polarization instrument 3 intercoms with main control computer 4 phase, and main control computer 4 communicates with acoustic-optic alarm 5;
Step 3004: opening device implements monitoring, the polarizability of the underground works tunnel that digital DC induced polarization instrument 3 and main control computer 4 pairs of interval period monitor or tunnel surrounding carries out real time record and analysis, obtain the polarizability of country rock within the scope of electric field controls, the polarizability of the underground works tunnel that digital DC induced polarization instrument 3 and main control computer 4 pairs of interval period monitor or tunnel surrounding carries out real time record and analysis, and in whole monitoring all the period of time, the position of A, B two transmitting electrodes 1 and M, N two potential electrode 2 does not change;
Step 3005: main control computer 4 and digital DC induced polarization instrument 3 are by the real-time analysis to the country rock polarizability monitored, obtain the country rock polarizability of different interval period in monitoring range and Changing Pattern thereof and feature, judge whether the variation tendency of interval period country rock polarizability, rule and feature meet the Precursory monitoring of setting, if the Precursory monitoring meeting setting enters step 3006; If do not meet the Precursory monitoring of setting, return main control computer 4 and continue monitoring and analyze;
Step 3006: the Precursory monitoring meeting setting, main control computer 4 starts acoustic-optic alarm 5 and sends early warning and return main control computer 4 simultaneously and continue supervision and analysis.
As shown in Figure 4:
Described step 3006 meets the Precursory monitoring of setting, and the step returning main control computer continuation analysis is as follows:
Step 4001: if meet the Precursory monitoring situation of setting, judges surrounding rock failure or unstability type and potential danger;
Step 4002: according to surrounding rock failure or unstability type and potential danger, judge whether it country rock disaster occurs and determines country rock hazard scope further, if there is not disaster, main control computer 4 starts acoustic-optic alarm 5 and sends early warning, and require managerial personnel and workmen's prevention and control, if there is disaster, enter step 4003;
Step 4003: if there is disaster, the determined monitoring range of deployment scenarios according to transmitting electrode 1 and potential electrode 2 determines hazard scope;
Step 4004: the hazard scope determined according to step 4003, main control computer 4 starts acoustic-optic alarm 5;
Step 4005: main control computer 4 issues early warning and rank simultaneously.
Also ground remote monitoring monitoring is realized by increasing the equipment such as switch, router, mobile base station.
In the present invention, described Precursory monitoring is what preset, and according to parameter, curve and trend that monitoring analysis draws, the pattern meeting setting represents that this country rock has the possibility that disaster occurs.
The Precursory monitoring that described step 3005 sets is kick, fluctuation, the acceleration decline of polarizability or sharply rises.
The above is only preferred embodiment of the present invention, and be not restriction the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equivalent variations.But everyly do not depart from technical solution of the present invention content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (2)
1. underground engineering wall rock disaster whole time interval induced polarization monitoring method, it is characterized in that: by transmitting electrode (1), potential electrode (2), digital DC induced polarization instrument (3), main control computer (4), acoustic-optic alarm (5) is composition underground engineering wall rock disaster induced polarization real-time monitoring device jointly, transmitting electrode (1) and potential electrode (2) connect by being connected wire with digital DC induced polarization instrument (3) respectively, digital DC induced polarization instrument (3) intercoms mutually with main control computer (4), main control computer (4) communicates with acoustic-optic alarm (5), transmitting electrode (1) and potential electrode (2) are arranged in underground works tunnel or tunnel surrounding monitored area, the polarizability of the underground works tunnel that digital DC induced polarization instrument (3) and main control computer (4) monitor interval period or tunnel surrounding carries out real time record and analysis,
Monitoring step is as follows:
Step 3001: in underground works tunnel or tunnel surrounding monitoring section, arrange A, B two transmitting electrodes (1) at a certain distance, the spacing of described A, B two transmitting electrodes (1) is 10m-100m; Between A, B two transmitting electrodes (1), arrange M, N two potential electrode (2) at a certain distance, the spacing of described M, N two potential electrode (2) is less than or equal to 2/3 of A, B two transmitting electrode (1) spacing, and MN >=AB/50;
Step 3002: A, B two transmitting electrodes (1) and M, N two potential electrode (2) are connected by being connected wire with digital DC induced polarization instrument (3) respectively;
Step 3003: digital DC induced polarization instrument (3) is connected with acoustic-optic alarm (5) with main control computer (4), digital DC induced polarization instrument (3) can intercom mutually with main control computer (4), and main control computer (4) can communicate with acoustic-optic alarm (5);
Step 3004: opening device implements monitoring, the polarizability of the underground works tunnel that digital DC induced polarization instrument (3) and main control computer (4) monitor interval period or tunnel surrounding carries out real time record and analysis;
Step 3005: main control computer (4) and digital DC induced polarization instrument (3) are by the real-time analysis to the country rock polarizability monitored, obtain the country rock polarizability of different interval period in monitoring range and Changing Pattern thereof and feature, judge whether the variation tendency of interval period country rock polarizability, rule and feature meet the Precursory monitoring of setting, the Precursory monitoring of described setting is kick, fluctuation, the acceleration decline of polarizability or sharply rises, if the Precursory monitoring meeting setting enters step 3006; If do not meet the Precursory monitoring of setting, return main control computer (4) and continue monitoring and analyze, the step continuing to analyze is as follows:
Step 4001: if meet the Precursory monitoring situation of setting, judges surrounding rock failure or unstability type and potential danger;
Step 4002: according to surrounding rock failure or unstability type and potential danger, judge whether it country rock disaster occurs further, if there is disaster, enters step 4003;
Step 4003: if there is country rock disaster, the determined monitoring range of deployment scenarios according to transmitting electrode (1) and potential electrode (2) determines hazard scope;
Step 4004: the hazard scope determined according to step 4003, main control computer (4) starts acoustic-optic alarm (5);
Step 4005: main control computer (4) issues early warning and rank simultaneously;
Step 3006: the Precursory monitoring meeting setting, main control computer (4) startup acoustic-optic alarm (5) sends early warning and returns main control computer (4) continuation analysis simultaneously.
2. underground engineering wall rock disaster whole time interval induced polarization monitoring method according to claim 1, is characterized in that: the switch that setting is connected with underground engineering wall rock disaster induced polarization real-time monitoring device, router, mobile base station equipment realize monitoring in ground remote monitoring.
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| CN105781620B (en) * | 2016-04-26 | 2018-02-02 | 北京科技大学 | Dynamic disaster method for early warning based on roadway surrounding rock rupture via hole monitoring |
| CN107015282B (en) * | 2017-06-05 | 2018-12-07 | 山东理工大学 | Underground space country rock disaster resistivity method of real-time based on anchor pole |
| CN107203010B (en) * | 2017-06-05 | 2019-05-17 | 山东理工大学 | Underground space country rock disaster, which is released, can and buffer method of real-time |
| CN110513149A (en) * | 2019-07-19 | 2019-11-29 | 武强 | A kind of gushing water monitoring device and gushing water monitoring method |
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